Hot-rolling machine.



`2%. B. WEAVER.' am? mums www. i

APPLICA-'UGM FlLE) f EB. RAME. '1,241,482'. A Emeuted-Swh,191?.

' z SH'EETSSHEET 2.

UNITED 'STATES PATENT OFFICE.

ROBERT B. WEAVER, OF DETROIT, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS,

T THE ANDERSON ROLLIED GEA-R COMPANY, 0F CLEVELAND, OHIO, A CORPORA- .TION OF OHIO.

HOT-BOLL1NG MACHINE.

Spccificaton'of Letters Patent.

Patented Sept. 25, 1917.

Application mea. February i2, 1912. seria] no. 677,105.

To all whom t may concern Be it known that l, ROBERT B.WnAvnn, a citizen of the United. States', and a resident of the city of Detroit, in the county of 5 W ayne and State of Michigan, have 1n-V vei'ited a new and useful Improvement 1n llotllolling Machines, of Which. the follow ing is a specific-ation.

My invention relates to machines for forming ge.a1te -:t li on a heated gear-blank by means of a die-roll. The 'object of my invention is the/improvement of machines of this kind to adapt' them for the rapid and certain 'production of accurately shaped bevel-gears and similar' artieies.

Further objects 4of my invention are disclosed in connection Withthe machine for orming'bevetgear teeth on heated gearblanks hereinafter described, which machine is illustratedv in the accompanying drawings. The' details 'of .my invention are pointed out4 With more -particularity in the lappended claims. u 4

In theV drawings, in which like characters are used -to designate likeparts throughout .the several views.

Figure l is a front elevation of my im! proved machine, showing a `gear-blanl z in Lposition to be operated ongand y Fig. 2 is a' side elevation of the same partly in section.

VIn carryingiout my invention .the gear-` blank to be operated on is` removably secured in a horaoiital position at the upper ex.-

tremityolia rotatable and axially ,movabie Vvertically arranged arbor; and its rim forced downward upon a dieJroll or other tool 'for shaping metal by pressure frein' above. The die-roll is secured upon the end 4001 a longitudinally, adjustable horizontal shaft or spindle rotatably journaled in fixed Libearings and having its axis of rotation in tersecting that of the arbor. The die-roll is adjusted in close' proximity te the rim or tooth-face of the gear-blank, so that chevertex .of the conical surface bounding the Working-face of the dieroll lies at Vthe point of .intersection ofthe'axes of the die-roll Ashaft 'and gear-blank supporting arbor. The die'sroll spindle lor shaft andgeanblank snpf porting arbor are connected' by gearing to cause them `to rotate at a "uniform speed ratio, this ratio being theratio of therein@ .ber'of teeth to be formed on the geanbl'ank arbor,

v Ato vbe inserted or removed,

' to the number of 'teeth on' tliedie-rollnor shaping to'ol.

Referring to the drawings, the blank-Sup porting arbor 5 is slidably arran Ied. in axial hearings' 6, 7 at the upper an' lower ex tremities ofahollow spindle 8 rotatably mounted in bearings' 9, 1Q -in cylindriea'l bosses projecting from the to' and bottom plates of the main frame 11- o the machine'. f

The upper end 12 of the arbor is slightly 'tapered as far 'as thecollar 13, and afaceplate or lower clamping-plate 14 is driven on the tapered end to a seat against the` collar. Tle upper face of the face-plate is shouldered to form a seat for an annular gear-blank.

In the operation of the machine, a gear?,

'blank 15 is arranged on the face-plate lil with its tooth-face down. The annular rim' of the gear-blank fits around the shoulder on the faceplate and the gear'blank is thereby centered on the arbor. An u lper claniping-plate 16, of greater diameter han the .gear-blank and having 'a centralfhole largeenough to lit loosely on 4the ta ered end of the arbor, 'is adapted tolle slipped' blanl,wlien the latter is in place in the en over the end of the 'arbor on top of ii'e"gear-l machine, and-a taper-pin orwedg'e 1.7 is

then driven into a tapered-'slot 18 infthe. end of the arbor to secure the clamping plate and gear-blank between the faceplate and elainpingplate.

eloW the collar 13 the arbor-His threaded Yfor a short distance and 'ay nut-4 adjusted thereon. This n'ut bears on its 'bottornon the top' of the spindle 8 near the upperlbe'aring 6.' Thenut may be adjusted-onfjthe arbor te limit ,the extent of its axial nieve-4 ment in a downward direction. The-lower;

end of the arbor is groove'd longitudinally on opposite sides and splines 22, secured in bor. A

lthe lower bearing 7 of the hollov'v7 spindle, having a sliding t in the grooves in the" thus forming a rotary driving conneetioii ,between the hollow spindle and arri' arm isiixedon' ahorizontal shaftfvffiw rool collar 23 is ipinned en the lower extremity of the arbor `to limit the 'verticalV oted in bearings 26 on the machine frame, and carrying a treadle 27 convenient to the foot ofthe operator.

l mounted r 1n The hollow-spindle 8 has a flange --19 near its upper extremity, and a fiber washer or a metal ring 20 is arranged between this flange and the top end of the bearing-sleeve 9, forming a thrustbearing supporting the' Weight ofthe holl'ovv spindle.- The sleeve bearing 9 is externally threaded on its up* per and lower extremities, which project above and .below the boss-on the rameof the machine, and .nuts 2l are adjustabl ar,-4

ranged on the 'threaded extremitiesv o the bearing-sleeve'-for securing the sleeve, and thereby the hollow-spindle, in vertical adj ustment in the machine frame. A. nut 28 is threaded on lthe l Werextremity of the,

hollowninydle and/contacts with the lower end of t e bearing iQ for preventing movement of the vspindle in an u'pvvar direction. A bevel ear 29 for rotating the hol low spindle is enovably secured to the flange 19.A

The die-roll 30 is forced on the inner end axial of the roll-spindle 31 against a Shoulder 32 and secured in place by a key -133 and nut 34. Theinner extremity of therollspindle is reduced' indiametcr and finished to folletojournal 35.- The rollspindle is provided withjournals 36, :B7-.between which the driving-pulley. 38 isinounted :and Isecurcly keyed, and has-agilange 39, coton the periphery to -form asur-gear, between the vin .the inner branch; fte-.0f 'the-steek, andthe i Secure the the. outerbranch .4:6 oithe ,stock-.in axial'.-

lline with .the .'innerjbeaaing., The roll spindle isheldfrominward axial movement l in this sleeve .by, the. ,111119,47 on. the end of ,Y the roll-spindle, and 'from outward. algal fjhe l slefweg provides' means for rotating1 increment b`y=. t l ),9 thrust-ring 48 on, the rollspindle adjacentthelhub of thedrlvng Pulley, between which nut and thrust-ring, the

sleeve 441s arranged. The inner end of the .sleeve is screW-'thyeaded and adjusted in an internally threaded portion 49 of the bone 45. --Ahand-wheel 450 on the outerl end lof b18- sleevefin-Qrderfto adjust it longitudine y in the boreal; A lekfnutt '51..SQQ111081'th8r-SlY .in longitudinal adjustment.

A shaft 52 is arranged in a bearing 53 in the inner branch 43 of the stock to rotate on an axis parallel with that of the rollspindle, and is held from longitudinal movement by the collar 54 and nut 55, one of .which bears on each side of tlie'stock. v The shaft 52 projects inwardly from its bearing toward the axis of the arbor, and a bevelpinion 56, having a hub constitutinga 'gea-1r.' oarricr,.is splined upon the' projecting end of the shaft and is held securel with its hub against 'the collar 54 by t e nut.,57 screwed on the end of the Shaft.- spurgea-r 5Sis splined upon the hub of the. bes/eL pinion, with it teeth ill-mesh with the' together with the spur gearcarried thereby, is rernovable from the s lined Shaft-by uu.- screwin the nut 57. t may be -re laced by anot er bevel pinion-in case itis desired to change-the gearratio ,between the arbor and roll spindle. -vThe bevel gear 29 may be replaced by another bevel ea'rmating -wth the second pevel inioIL y. reason of the facility with whie thcymay be changed to A8 toothed flange 3 9 on the roll-spindle. The 'J0 :bevel-pinion 5 6. meshes with the bcvelgeax- 29 on the hollow-spindle. The bevel pinion,

alter the' gear ratio, these gears zare riesigmated collectively by the name changeab gearing.

mounted on theA top-plate of the-machine.

96 A, pedestalz consisting of two legs 59 coni nected at 'their upper ends by a yokeGO, is

frame, -straddling the inner end of the roll' f spindle, and is secured to the'"topplat e by 'bolts 6.1 passing through .holes 62 in the baseflanges 63 of the legs.

These holes 62. are slightly larger than the bolts to admit of slight adjustment ofthe pedestal on the topplate. '.[fhe bolts 61 pass through elongated slot-'s 64 1n the top-plate, the .longer axes of los the slots being parallel to the axis of the.

.roll-spindle, and/lare; tightened up by nuts 65 on their lowerfends. By loosening the nuts the Vpedestal maybe shitedto a limited extentV in a direction parallel to the axis of theroll-spindl'e. .-Alweb 66 connects the le sl spindle, and is provided with a bearing 67 Afor .the journal 35 of the roll-spindle; This bearing may be adjusted vertically to vary its" height above the top-plate`by placing .shims under the base flanges of the pedestal legs. A. trough 69 is attached 4to the web 66 below thedie-roll f or holding oil or other cooling liquid into Which the' die-roll mayA Thgeyoke G (l-swprovided-.With a cylindrical bore -83,`fhavingttsfaxis vertically disposed and in the plane of the arbor and roll-spindle. Inthidbore is rotatably mounted an igternailystlueadedsleeve 7 0 having u lian ze "'Zl'fat its lower end bearing' against the lower lface of theyoke. A bevel-gear'f?, is keyed on'the upper end of thesleeve and adjusted 130 v face-plate with its tooth-ring clown.

hy means oi a nut 73 to hear ou the upper face of the yoke and .support the Sleeve in the bore. A horizontal shaft Tfl is rotatably mounted. in a l'ueai'iiur in the yoke and. oarries a lievel pinion T5 which is in mesh with the lierel-gnfai T2. A ha inl-wheel 7G on the end oi' the shaft 7l; provides ay means lor rotating' the shaft and llevel-pinion, and thereby rotatingY the sleeve T0. Pius 77 are fixed in the yoke on both .sides ol the sleeve and project downwardly toward the tot plat-e of the inaehine. '.l`hese pins are pal'- allel and serre guides 'for a ei'osshead 78 slidahly arranged upon them helow the yoke. erossbeafl inaxial line with the internally tl'neadi-al sleeve, with whirxhit engages. The screw-shaft heine i|oi'|rotatal.ily secured to the urnes-bead, 'the rotation of: the sleeve screws it up or down, vai-nylug the oroselieail with it. A. roller 80 arranged between, twodngs 51 on the under side oi.2 the eroeshead in' line with the screw-shaft. This roller is: carried by apio S2 driven 'lhrongh it, the ends of the pin heine` journaled in hearings in the lugs. When the cross-head is lowered the relier hears on the too side of the .upper elamping-ifviate i6 at a 'point about over the4 de-roll. By screwing down the cross-head pressure can he put on the clamp: ing-plate directly over the point of Contact of `the die-roll with the gea-wblank.

in the operation ot my machine, the arbor is raised by means of the foot-treadle, and a heated gear-blank is dropped onto the Next the clamping-plate is placed over the gea-rblank audtightened up by driving Vin the Wedge. The newer is thrown on, thus rotating the die-roll and arbor at a uniform sneed ratio, and pressure applied by means of the hand-wheel 76. to force the gear-blank into Contact with the dieroll. Pressure is i maintained on the geanhlank until the teeth are formed` hy the die-roll to the required depth, at' which point the further downward movement of the arbor is arrested-by power is thrown off, the arbor-raised by the treadle, the Wedge knee-hed out, and 'the ,freer-blank with teeth formed thereon re moved.

Although I have -illustrated but one die- 'rollin my machine, and have described the use of. hat one diefroll in the oneratlon of forming gear-teeth by niyinachine, find 'that Middle-rolls soon lose their accuracy of outline ,if used to form @gear-blank with A serene-shaft 75) ie attached to the Ine-nt on relatively fixed aXes;-

correctly shaped teeth at a single operation, and therefore in practice I prefer to form the teeth to approximately their correct shape with a roughiug olie-roll and then to relientiiho ;;oail'ilarilcs, or transfer them lo another machine, und form 4"he teeth to the correct shane With a finishing die-ro1l.

The arrang'en'ieut oi parte of' my machine :ula-nits of' changing the sizes end-numbers et" teeth o'l the ,gambia-nk and die-roll Within the liinitsoll the maehine. The toothed liange) on the :roll-spindle and the spur- ,eear are of the saine size and number of teeth, and the distance betiteentheir oeniiers is fixed. This pair. of gears are -out to mesh together 'with very little backlash. 'lhe -bei'ehgear 29 and bevehpinion 56, which are c-,hano'efl when the number of teeth on the die-ijoll or gear-blank is Varied., .may he adjusted to mesh pionerly by sliding the stoek'longituilinally in its ways and then raisingor lowering); the hollow spindle by means o'l`Y the seiew-i'ings on the sleeve 9. Alfter clamping the stock on the tope-plate the diefroll can be axially adjusted to cor rect working' oosition li" ineens of the hand- V W`hat I elaini and desire to secure by Letters Patent is as follows:

'1. In a machine `for hot-rolling gea rhlanlrs, a. power-driven s indle, adie mount ed on said spindle, an ariior carrying a gearblank clamping means, means for pressing nearer together said -die and 'gear-blank clamping means, and gearing betweenthe spindle and the arbor for rotatin there at a nniforni velocit-y ratio during-t e relative movementof said die and gearblank clamp4 lng means, -said gearing comprising two rotating members 1n drivmg engagement and' mounted for relative lengthwise axial move- 2. In a machine for hot-rolling gearblanlcs, a. power-driven spindle, a die miinted on said spindle., an arbor earrying ay gearblank VClamping means, means for pressing nearer together said die and gear-blank clamping means, said arbor being arranged at a fixed angle to said spindle?) and gearing between 4the spindle and the ar or :tor rotatlng them at a uniform Velocity ratio during i 'h'.tr -:lative movement of Sai'cl die and gearblank clamping means, said gearing comprisiso ing two rotating' members irl-driving engage-l ment and mounted for relative lengthwise axial movement on relatively fixed axes.

3. In a machine for hot-rolling geen blanks, a power-driven spindle, a die removably mounted on said spindle, an arbor carrying a gear-blank clampingoneane, means for pressing nearer together said die and gear-blank clamping means, and changeable gearing between the spindle and the arbor for-rotating'them at a uniform velocity ratio during, the relative movement of said die and-gearfblank 'clamping means, said geen ing comprising two rotating members .in driving engagement and mounted for relative lengthwise axial. movement onrelatively ixed'axes.

4.111 a. die-rolling machine, a spindle, a die-roll mounted on said spindle, means for clamping a work-blank, means for feeding saidderoll toward said work-blank clamping means, and gearing between said Workblank clamping means and sai-d spindle, said gearing comprising two rotating members in dri-ving engagement and mounted for relativelcngth'wse axial movement on relatively fixed axesso' as to produce uniform relative speed (if-,rotation between Said Work-blank und said spindle during-.said feeding operation..

'5, rn it` .(i e-.1olling machine a spindle a. dieroll mounted on said spindle, means or clamping a work-blank, said die-roll and Work-blankclamping means being relatively movable toward and from eachother, and gearing between said Work-blank clampingmeans-and said spindle, said gearing comvel-gear onotherv of v"said rotatable mbersond arotatably mounted removablesur'foarrier` having fixed thereangears pulsing-two rotating members in drvmg engagement'jan'd mounted for relative length wise movement on relatively fixed axes so as to produce uniform relative speed of rota-- tion bctvvenfiiaidwork-blank and said spmdle during relative movement of the die-roll eindwerk-blank clamping means toward or from'eanh; others.;` Y

6. Info; mgtabrollng machine, a rotatable roll-shaft( av 'rotatable work-support, and gearng'connecting s aid rol1-shaf-t and vvorksupport, said-' caring com rising a spur @et .on -one''b :said 'rotate la. members, a

meshing with said spur gear and bevebgear, respectlvely.

7. In a metal-rolling machine, a rotatable roll-shaft, a. rotatable and axially movable work su port, and gearing connecting said roll-sha I comprsin aspur gear on one of said rotatable mem ers', a bevel' gear on the other of said rotatable members, and an axially -adjustable rotatably mounted gear carrier having fixed thereon goers meshing with Seid spur and bevel gears, respectively.

.8. In a metalfrollng machine, a rotatable .and "work-support, said gearingvmeans towar stock a rotatable work-support 'relatively mova le with respect to said decarryin shaft, gearing connecting Said shaft an' Work-support comprising a gear-f having driving engagement with said shaft, a gear having driving engagement with said worksupport,"a removable gear rotatably mounted in said stock, the axis ofsaid removable gear being fixed with respect to the axes "of said die carrying shaft' and 'worksiii port and driving-connections between sai' :last mentioned gear and said first named gears whereby a uniform speed ratio is maintained between said Work-support and shaft.

10. In a metal-working machine, a Stoch,v a die-carrying shaft rotatably mounted in said stock, a rotatable work-support with its axis of rotation at an angle to the' axis of said shaft, means for moving the work-'sup port along its axis, and toothed gearing con; necting said work-su port with said shaft, said toothed gearing ing-engagement wlthsai work-support whereby a uniform speed-ratio between said work-support and shaft is maintained during' the axial movement of said work-support.

11. In a machine for forming bevel-gear.

teeth, a power-driven spindle, a die-roll nonrotatabl 4secured on said spindle, a rota` table ar r carrying clamping means for a gear-bla1 1k, said arbor being arranged at an angle to said spindle, means for axially ad.`

'- Justing said die-roll into operative position to form teeth on roller bearin upon said ingmeans a jacent the said gear-blank, a rassure'- ear-blan r clampook face of the position of the e-roll, and means for a vancing said dpressure-roller and clampin said dic-roll as the toot Aforming .operation progresses. 1

13. In a machine for forming bevel-gear teeth, a stock ad'ustably secured' on the frame of the mac ine, a die-spindle rotatably mounted in said stock, avertical hol# `gear-blanlr at a point opposite theA workilg avin a sliding drv-f" rm teeth on said gear-blank, and

Afrom the axis of the die-spin le, a means for raising said arbor, and a means for apply-'ing `pressure, in a vertical direction to said clamping means.-

14. In a machine for forming bevel-gear teeth, a stock, a 'd iespindle rotatably mountedvin said stock, manuali erated means for'V adjusting-said spin le ongitudinally ,1; 4'with respect to said stock, a vertical hollow pinion rotatably mount 'sj' indie rotatablymounted in theframe in t e plane of 'thei-diespindle, a bevel-gear carried by saidhollow indie and a bevel on' said istock-- said ear and having their teeth in driv- "g'enga' ement, a driving connection bef4 itweenlsai die-s indica-nd said'beveLpinion,

avertiall' sli able 'arbor axially arranged in said ho low-spindle, said arbor havingna driving connection with said hollow-spindle, an adjustable stop on said arbor for limiting its vertical movement, clamping-means for 'a' gear-blank npon said arbor, said clam-ping means being arranged to support the gearblank in a' horizontal .plane spaced from the axis ofthe die-spindle, a means'for raising. said arbor, and a means for applying pres-V surein a vertical direction to said clamping means.

15. In a machine for. forming bevel-gear teeth, a stock ad'ustably 4secured on the tably mounted in said stock, manuall o er gitudinaly with respect to said stock,` a .L vertical hollow-spindle rotatably mountedliin the frame in the plane of the die-sp1ndle,.. means for vadjusting said hollow-spindie,`

isov ated means for adjusting said spin'le on.

vertically in the iframe, 'a bevel-gear carried by said hollow-spindle and a beveljpinion rotatably mounted on said stock, said'g'e'aiy and pinion' having their teeth in driving. engagement, a drivin said `hollovvespindle, said arbor having a driving ,connection with said hollow-spindle, an adjustable stop on. said arbor forl1miting its vertical movement, clampn f means for a gear-blank upon 4said arbor, sai clam ing means being arranged to supporttemar-,see

connection between -gaid,igl ie-sp.indle and said-bevelpinion, a vergif.. 4ftnlllyslidable arbor axially arranged iii-f ear'blank in ahorizon-tal plane spaced 'rom the axis of the die-spindle, a means for raising said arbor, and a means for applying pressure in a vertical direction to said clamping means.

16. Ina machine for forming gear-teeth, a rotatable die-s indle, a hollow-spindle at an an le to said" ie-spindle, geari between said ie-spindle and hollow-spingi able arbor axially arranged in said. hollowspindle, said arbor having a driving. connection with said hollow-spindle, a remov'- able clamping-plate mounted upon said arbor, saidiclamping-plate being Aarranged to support a. gearfblank adjacent to said die- ,a sin V spindle, means for giving rapid longitudinal movement to said arbor, and separate means for applying pressure to said clamping-plate in a direction toward said die-spindle.

17. In a machine for forrnin gear-teeth, a rotatable die-spindle, a hol ow f spindle journaled in fixed bearings at an angle to said -d1e-spindle, gearing between said diespindle and hollow-spindle, a slidable arbor having a driving connection with said h'ol-4 low spindle, Ia removable clamping -plate mounted upon said arbor, said lclam ing .platebeing arranged to support a geanb' ank adjacent -to said die-spindle, and means for applying pressure to said clamping-plate in' a d1rection.t'oward'said die-spindle.

18.' In a hot-rollin machine', 'a rotating die, "a lrotatable spin. le journaled in fixedbearings, an arbor slidably mounted in` said spindle, said arbor having an enlarged portion near its extremity, a face plate bearing a c. hole against said face plate, iind'means for giving axial movement to said arbor to with draw said blank fromthe proximity of said rotating die.

19. lIn a metal working machine, a'stock,

a diecarrying shaft rotatably mounted 'in saldstoek'andliaving a fixed speed ratio driving connection with said gear,'a rotatalgainst said" enlarged portion,- nient-islorl amping aheated blank having a "central l a removable gear rotatably mounted therein, 1101'.

ble-work support, a removable gear-,meshing with said first named gear and having a Fixed speed ratio driving connection'vvith said rotatable Work=sup port, and means 'for pressing. together said and work support.

20. In a hot-rollin machine, aserrated die, Va rotatable spin le, an .ai-bor mounted' for' rotation with said spindle and -slidably axially thereof, said arbor having a. face means-'for clamping a. heated blank. a; ng a concentric' fiange'fto said faceplate,

and means for s'liilin said -ai'bor through 'snil 'spindle in an' axial direction to withdrii-w said blank from the. proximity of said 1 serrated die.

ai.. in i. mienne .fermare-@11mg gar-g blanks, a spindle, a die mounted on said `die-darr'ying shaft f spindle, an arbor carrying a gear-blank support, meansl for pressing nearer't ether said die and gear-blank support sai support bein so constructed as to aiiord direct support or the portion ofthe gear-blank against which said pressure acts, and gearing between the spindle and the arbor for rotating them at a uniform velocity ratio during relative movement'osaid die. and gear-blank support, said gearing comprising two rotating members in driving engagement and mounted for relative length- Wise axial movement on relatively fixed'axes.

22. In a machine for hot-rolling gearblanks, a spindle, a dieremovablysmounted on said spindle, an a'rbor carrying 'azgearblank support, means for pressing nearer together said die and gear-blank support, said support being so constructed as. to afford direct support for the ortion of the gear blank against which sai pressure acts, and'ohangeable earing'between the spindle and the arbor r rotating them at a uniform velocity ratio during the relative 'inovement of said die 'and gear-blank support,"

said gearing'comprising two rotating inembers in driving engagement and mounted for rela-tive lengthwise axial movement on relatively" fixed axes.

23. In -a metalworking machine, a stock a die carrying'shaft vrotadzably 'mounted therein, a rotatable support Ifora gear-blank mounted with its` axis of rotatlon at an angle to 4the axis of said shaft, means for moving 'the support along its axis to press ,mamas the die carried by the shaft against the gearblaiik carried by the support, and toothed gearing connectin said' sup ort with the said dile shaft, sai gearing having a sliding driving-engagement with said support whereby a uniform speed-ratio is maintained during the axialmovement of the sup ort said support being of such form as to aord direct support'for the portion of the gearblank which receives thepressureofV the dieis -a dieroll having teeth which taper along' the pitoli-surface, `means for pressing the die-roll and blank togetlrien'ancl means for producing contemporaneously with 'said pressure relative movement whereby the dieis rolled on the face of thel bla-nk.

or having a face Signed at Detroit, Michigan,` thisrthl day of Februari? 1912; i OBERT B. wiEAvER. Witnessesb HERBERT Wi ALDEN, LESLIE WILIBrAMs.-

DISCIJAILIER.

1,24|,482.--}?nbert D. Wauw. Dmmit. Mich. ihn-ROLLING MACHINE. Patent.

dated September 25, 1917; Disclaimer filod September 20, 1919, by The Andermm Rolled Gear Company, nzssignm by mesme aasgmnvnts` Entsrs lxis L{: lin|0| Tu lhnl, purl of thu 'lnim in sah! cpf-e'iicaxlinn which is in the following words, tu wil;

"2:3 machine fm' rulling mmh :an gcnm umnprising mmmfor supporting n blank, n liv-roll having Lol-th wlrh taper "lung tlw pitch-surface, means for pre-av ing tim do-rll and blank Ingfthvr, nml nwuns for producing contemporaneously with sul@ pressure reabvu mm'vmmx! .\In.\'-x v the div is round on Uw fari' of i-lw: 

